Ruoxi Wang

Just another geek.

Month

January 2016

A better way of estimating derivatives from discrete-time signal?

A question jumped into my head while processing data from MEMS sensors and Vicon: Is┬áthere any better ways of estimating first-order derivative of a function using samples at a fixed time interval, i.e. a "table"? To be precise, suppose we... Continue Reading →

Toward Internet security: a practical guide to OpenVPN tunneling.

Abstract This article presents a brief, step-by-step guide of setting up an VPN server which relays all your Internet traffic in a secure way so that you can surf the Internet as if you are at your server's location, with... Continue Reading →

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